CN210908270U

CN210908270U - Rough machining is with high-efficient milling cutter of large-bite amount

Info

Publication number: CN210908270U
Application number: CN201921700316.6U
Authority: CN
Inventors: 王迪
Original assignee: Suzhou Spandi Precision Tools Co ltd
Current assignee: Chuzhou Yongpu Alloy Tool Co ltd
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2020-07-03
Anticipated expiration: 2029-10-11

Abstract

The utility model discloses a rough machining is with high-efficient milling cutter of draughting tool height, including handle of a knife and cutter body, the cutter body includes end sword, all sword and helicla flute, its characterized in that: the diameter of the cutter body is 12-15 mm, the cutter body is a ball head, the radius of the ball head of the cutter body is 6.5-7.8 mm, the length of the cutter body is 28-32 mm, the number of the spiral grooves is 2, and the spiral angle of the spiral groove is 30 degrees, and the key points of the technical scheme are that a ball head bottom edge and a large spiral angle of 30 degrees are adopted, so that the rigidity of the bottom edge is enhanced, the contact length of the R part of the bottom edge and a workpiece is increased, the axial stress of the cutter body is reduced, and the cutter body can be suitable for rough; the cutter body adopts the design of two swords, and the chip removal ability is strong, and rough machining efficiency is high.

Description

Rough machining is with high-efficient milling cutter of large-bite amount

Technical Field

The utility model relates to a milling cutter, more specifically say, it relates to a rough machining is with high-efficient milling cutter of draft tool height.

Background

The rough milling cutter aims at cutting blank allowance quickly, and large feeding amount and cutting depth as large as possible are selected during rough machining so as to cut most of machining allowance on each surface in a short time and enable the shape and the size of the blank to be close to those of a finished product. The stage is characterized by using a high-power machine tool, selecting larger cutting amount, improving the productivity as much as possible, reducing the abrasion of the cutter and the like. When the curved surface is machined, the traditional flat-bottom milling cutter has low tool consumption when the curved surface is machined, the machining shape cannot approach a finished product, and a ball-end milling cutter needs to be replaced for semi-finishing and finish machining, and is an ideal cutter for semi-finishing and finish machining of the curved surface.

However, when the conventional ball end mill is used for rough machining of a curved surface, the conventional ball end mill cannot be used for rough machining because the axial cutting force is too large and the capability of the spindle motor of the machine tool against the axial force is poor.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a rough machining is with high-efficient milling cutter of draft sword, it makes ball end milling cutter have rough machining ability.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a rough machining is with high-efficient milling cutter of high-draught cutter, includes handle of a knife and cutter body, the cutter body includes end sword, all sword and helicla flute, its characterized in that: the diameter of the cutter body is 12-15 mm, the cutter body is a ball head, the radius of the ball head of the cutter body is 6.5-7.8 mm, the length of the cutter body is 28-32 mm, the number of the spiral grooves is 2, and the spiral angle of each spiral groove is 30 degrees.

Preferably, the core thickness of the cutter body is 8-10 mm.

Preferably, the diameter of the tool handle is larger than that of the tool body, and a 30-degree chamfer is arranged at the joint of the tool handle and the tool body.

Preferably, the peripheral edge includes a peripheral edge rake angle of 6 °, a peripheral edge first relief angle of 10 °, and a peripheral edge second relief angle of 28 °.

Preferably, the peripheral edge first relief edge width is 1.01mm, and the peripheral total width of the peripheral edge is 2.56 mm.

Preferably, the end edge includes an end edge first relief angle and an end edge second relief angle, the end edge first relief angle is 12 °, and the end edge first relief angle edge width is 1.09 mm.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the ball-end bottom edge and the 30-degree large helical angle are adopted, the rigidity of the bottom edge is enhanced, the contact length of the R part of the bottom edge and a workpiece is increased, the axial stress of a cutter body is reduced, and the cutter is suitable for rough machining; the cutter body adopts a two-edge design, so that the chip removal capability is strong, and the rough machining efficiency is high;

2. the diameter of the cutter body and the radius of the ball head are large, the length of the cutter body is small, the core thickness reaches 8-10 mm, the cutter can be suitable for rough machining with high tool consumption, the strength of the cutter is high, and the service life of the cutter is long;

3. through set up the chamfer at cutter body and handle of a knife junction, can increase the smooth and easy degree of chip removal, prevent the card bits, rough machining is efficient.

Drawings

FIG. 1 is a schematic front view of the present embodiment;

FIG. 2 is a partial cross-sectional view of FIG. 1

FIG. 3 is a schematic view of the bottom structure of the cutter body;

FIG. 4 is a partial cross-sectional view of FIG. 3;

in the figure: 1. a knife handle; 2. a cutter body; 21. a bottom edge; 22. a peripheral edge; 23. a helical groove; c. A peripheral edge first relief angle; D. a peripheral edge second relief angle; E. a bottom edge first relief angle; F. a bottom edge second relief angle; G. total width of the periphery; H. a peripheral edge rake angle; I. a peripheral edge first relief angle edge width; J. the bottom edge first relief angle edge is wide.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A rough machining high-cutting-index high-efficiency milling cutter comprises a cutter handle 1 and a cutter body 2, wherein the cutter body 2 comprises a bottom edge 21, a peripheral edge 22 and a spiral groove 23, the diameter of the cutter body 2 is 12-15 mm, and the cutter is large in diameter and strength; the cutter body 2 is a ball head, the radius of the ball head of the cutter body 2 is 6.5-7.8 mm, the length of the cutter body 2 is 28-32 mm, the cutter body 2 is short in length and large in rigidity, the number of the spiral grooves 23 is 2, the chip removal capacity is high, the spiral angle of each spiral groove 23 is 30 degrees, the contact length of the bottom blade 21 and a workpiece is increased, the axial stress of the cutter body 2 is reduced, and the cutter body can be suitable for rough machining.

The core thickness of cutter body 2 is 8 ~ 10mm, and the core is thick big, and resistance deformability is strong, and the diameter of handle of a knife 1 is greater than the diameter of cutter body 2, and handle of a knife 1 is provided with 30 chamfers with cutter body 2 department of meeting, promotes the chip removal ability, effectively avoids the card bits.

The peripheral edge 22 includes a peripheral edge rake angle H, a peripheral edge first relief angle C, and a peripheral edge second relief angle D, the peripheral edge rake angle H is 6 °, the peripheral edge first relief angle C is 10 °, the peripheral edge second relief angle D is 28 °, the peripheral edge first relief angle edge width I is 1.01mm, the peripheral total width G of the peripheral edge 22 is 2.56mm, the width is large, and the method is suitable for rough machining.

End sword 21 includes end sword first relief angle E and end sword second relief angle F, and end sword first relief angle E is 12, and end sword first relief angle sword width J is 1.09mm, and the sword is wide big, and intensity is big.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications without inventive contribution to the present embodiment as required after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a rough machining is with high-efficient milling cutter of high-draught cutter, includes handle of a knife and cutter body, the cutter body includes end sword, all sword and helicla flute, its characterized in that: the diameter of the cutter body is 12-15 mm, the cutter body is a ball head, the radius of the ball head of the cutter body is 6.5-7.8 mm, the length of the cutter body is 28-32 mm, the number of the spiral grooves is 2, and the spiral angle of each spiral groove is 30 degrees.

2. The roughing bite high-efficiency milling cutter according to claim 1, wherein: the core thickness of the cutter body is 8-10 mm.

3. The roughing bite high-efficiency milling cutter according to claim 1, wherein: the diameter of handle of a knife is greater than the diameter of cutter body, the handle of a knife is provided with 30 chamfers with the cutter body department of meeting.

4. The roughing bite high-efficiency milling cutter according to claim 1, wherein: the peripheral edge comprises a peripheral edge front angle, a peripheral edge first relief angle and a peripheral edge second relief angle, wherein the peripheral edge front angle is 6 degrees, the peripheral edge first relief angle is 10 degrees, and the peripheral edge second relief angle is 28 degrees.

5. The roughing bite high-efficiency milling cutter according to claim 4, wherein: the peripheral edge first relief edge width is 1.01mm, and the peripheral total width of the peripheral edge is 2.56 mm.

6. The roughing bite high-efficiency milling cutter according to claim 1, wherein: the end blade comprises an end blade first relief angle and an end blade second relief angle, the end blade first relief angle is 12 degrees, and the end blade first relief angle blade width is 1.09 mm.